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Samenvatting - Menselijk Functioneren 1

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lymfestelsel hoorcollege samenvatting

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Uploaded on
April 30, 2024
Number of pages
21
Written in
2022/2023
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lOMoARcPSD|17830946




HC
Het Lymfestelsel en immuniteit

Onderdelen lymfevatenstelsel
1. Vaten = lymfevaten
2. Vloeistof = lymfe
3. Cellen = lymfocyten
4. Weefsels en organen = lymfoide weefsels (vaak daar waar contact is met de buitenwereld)

, lOMoARcPSD|17830946




Functies van het lymfestelsel:
1. Productie, onderhoud en transport van lymfocyten
✓ Reageren op indringers (bacteriën, virussen, schimmels enz.)
✓ Reactie op afwijkende lichaamscellen (tumorcel)
✓ Reactie op vreemde eiwitten (toxines van bacteriën) (bv bloedgroepen)
2. Terugkeer van vloeistoffen en opgeloste deeltjes van perifere weefsels naar het
bloed (3,6 l/24 uur)
3. Transport van hormonen, voedingsstoffen (alle vet oplosbare stoffen) en afvalstoffen vanuit
de plaats van opname in de weefsels naar het bloed

Lymfevaten
=> lymfecapillairen: beginnen blind in het interstitiële weefsel = open systeem
=> 2 grote lymfevaten:
1. ductus thoracicus, links hoofd, linker arm rest van het lichaam
2. ductus lymphaticus dexter (kleiner) rechts hoofd, rechter arm

, lOMoARcPSD|17830946




Lymfeknopen duidelijk aangegeven = kleine ovale lyfoide organen, omgeven door een vezelig
kapsel, gevuld met lymfocyten
Lymfevatensysteem
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